Urban memory is preserved not only in the collective consciousness of residents but also through tangible and intangible heritage, such as old streets, ancient buildings, and historical sites. Protecting urban memory helps maintain the city’s authentic historical character and enhances its sense of belonging. This paper systematically collects and organizes research materials on urban memory planning from both domestic and international sources, categorizes and analyzes the relevant literature, and reviews the perspectives, content, methods, and planning practices in urban memory research worldwide. By summarizing these research experiences, the paper aims to deepen the understanding of urban memory theory and offer new recommendations for renewal planning practices guided by urban memory.